(unstack b7 b8)
(stack b7 b5)
(unstack b8 b1)
(putdown b8)
(pickup b2)
(stack b2 b8)
(pickup b3)
(stack b3 b2)
(unstack b1 b6)
(stack b1 b3)
(unstack b7 b5)
(stack b7 b1)
(unstack b6 b4)
(stack b6 b5)
(pickup b4)
(stack b4 b7)
(unstack b6 b5)
(stack b6 b4)
(pickup b5)
(stack b5 b6)
; cost = 20 (unit cost)
